<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Demo05</title>
</head>
<body>
<form action="/P11_Request/demo05" method="post">
    <input type="text" name="username"/><br>
    <input type="password" name="password"/><br>
    <input type="checkbox" name="hobby" value="1">唱
    <input type="checkbox" name="hobby" value="2">跳
    <input type="checkbox" name="hobby" value="3">rap<br>
    <input type="submit"/>
</form>
</body>
</html>